If IgnoreCase is false (the default), a string will only be considered valid if it matches one of the stored values exactly, including case. Otherwise, any case (including mixed) is accepted.

public bool IgnoreCase { get; set; }

Public Property IgnoreCase As Boolean
	Get
	Set

public:
property bool IgnoreCase {
	bool get ();
	void set (bool value);
}

member IgnoreCase : bool with get, set